Pros
Sabre (inlcuding Travelocity, Airline Solutions, and Travel Network) is great for folks that like a collegial atmosphere, a decent work environment, and the travel industry. It promotes a good work-life balance, and has a great campus. Compensation is fair, not great. It's a company where its common to move between vastly different businesses under one roof - online .com, Fortune 500 product marketing / account management, and hardcore software product experience can all be obtained. Its the kind of company where employees who like it enough to stay for 3 years generally go on to stay for 7-10.
Kontras
Sabre isn't a company to bet your career on, especially if you're more ambitious. Once you're in place, expect to advance at most a level (maybe two) over 5-6 years - and then stop. There are not many promotion opportunities since it's geared to defend its market share - not grow. Its core business of travel agency distribution is stagnant/shrinking, and unlike other companies there's no strategic business vision for growth. Combined with the private equity ownership (increasing the short-term and defensive viewpoints), the result is periodic layoffs and lack of promotion opportunities.